The answer to 'why is my flat roof missing shingles' is that there are several common causes, including age, wear and tear, improper installation, and damage from weather or debris. Flat roofs often use a different type of roofing material, such as modified bitumen or single-ply membrane, rather than traditional shingles. Over time, these materials can become worn, cracked, or detached, leading to missing sections.
Symptoms of a flat roof with missing shingles may include leaks, water pooling, and visible gaps or holes in the roofing material. To address this issue, you'll need to inspect the roof, identify the cause, and either repair the affected areas or consider a full roof replacement if the damage is extensive.